Asea Brown Boveri 1SFA897105R7000 Soft Starter

ABB PSE45-600-70 Softstarter, part number 1SFA897105R7000, is a line‑side soft start module for three‑phase motors up to 22 kW. It accepts a control supply of 100–250 V AC and supports a main voltage range of 208–600 V AC with a continuous current rating of 45 A; the unit includes an internal bypass for running speed operation. As a member of ABB’s PSE softstarter family, it provides a controlled voltage ramp to start motors smoothly, reducing inrush current and electrical stress on the power system. At 400 V nominal operation it delivers about 22 kW of motor power (roughly 30 hp). The 1SFA897105R7000 designation is the exact product variant used for ABB installations requiring the PSE45-600-70 configuration. Typical applications include fans, pumps, conveyors, and other non‑drive loads where gentle starting improves reliability and reduces mechanical and electrical transients. The softstarter’s bypass disengages once the motor reaches speed, helping minimize heat in the starter electronics during run.